Patterns of male production in the stingless bee Melipona favosa (Apidae, Meliponini) Tong X. Chinhinst, Gijs B.J. Grob, Francis J.A.J. Meeuwsen and Marinus J. Sommeijer Apidologie, 34 2 (2003) 161-170 DOI: 10.1051/apido:2003008